CN104154762B - Mine heat furnace smelting flue-gas dust removal and purification processing method and mine heat furnace smelting system - Google Patents
Mine heat furnace smelting flue-gas dust removal and purification processing method and mine heat furnace smelting system Download PDFInfo
- Publication number
- CN104154762B CN104154762B CN201410375075.8A CN201410375075A CN104154762B CN 104154762 B CN104154762 B CN 104154762B CN 201410375075 A CN201410375075 A CN 201410375075A CN 104154762 B CN104154762 B CN 104154762B
- Authority
- CN
- China
- Prior art keywords
- gas
- temperature
- dust removal
- flue gas
- filtering high
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a kind of mine heat furnace smelting flue-gas dust removal and purification processing method and the mine heat furnace smelting system that can carry out comprehensive udst separation to the flue gas produced in mine heat furnace smelting process.The method comprises following operation: 1) the flue-gas dust removal and purification process in baker stage: reclaim the flue gas of mineral hot furnace generation and be warming up to more than 280 DEG C, then passing into the first filtering high-temperature flue gas device and carry out dust removal by filtration purification; 2) the high-temperature gas duster Recovery Purifying process in normal smelting stage: reclaim coal gas of high temperature that mineral hot furnace produces and passed into the second filtering high-temperature flue gas device and carry out dust removal by filtration purification; 3) matallurgical products goes out the flue-gas dust removal and purification process of heater stage: passed into above-mentioned first filtering high-temperature flue gas device carried out dust removal by filtration purification by flue gas suction facilities recovered flue gas, the first filtering high-temperature flue gas device and the second filtering high-temperature flue gas device all adopt high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element.
Description
Technical field
The present invention relates to a kind of mine heat furnace smelting flue-gas dust removal and purification processing method and the mine heat furnace smelting system designed by enforcement the method.
Background technology
A large amount of ash-laden gas can be produced in mine heat furnace smelting process.These flue gases major part is at the mineral hot furnace normally coal gas of high temperature that produces of the stage of smelting; Also have small part for the low-temperature flue gas of high tar content that produces in the mineral hot furnace baker stage and go out heater stage at matallurgical products and follow the matallurgical products process of coming out of the stove and distribute flue gas in mineral hot furnace outside.The current udst separation process to mine heat furnace smelting flue gas is substantially only for above-mentioned coal gas of high temperature, and the method for process uses sack cleaner to filter after being through a series of cooling, and then optionally ignition bleeding or storage are carried out to the gas after filtration according to the composition of coal gas.Above-mentioned flue-gas dust removal and purification treatment measures comprehensively can not carry out udst separation to the flue gas produced in mine heat furnace smelting process, can not recycle fully the sensible heat of mine heat furnace smelting flue gas and latent heat.In addition, for mineral hot furnace baker flue gas that the stage produces, because its tar content is high, adopt sack cleaner and process is carried out to it cloth bag can then can be caused rapidly to be caused cloth bag to block by the greasy filth material such as tar attachment pollution; And the efficiency of dust collection of mechanical dust collector (as gravitational precipitator) is not high, electric cleaner is installed and used also uneconomical.Visible, develop for the mineral hot furnace baker stage produce flue gas udst separation treatment technology become the technical barrier that " zero-emission " that realize mine heat furnace smelting flue dust face.
Summary of the invention
First technical problem to be solved by this invention is to provide a kind of mine heat furnace smelting flue-gas dust removal and purification processing method and the mine heat furnace smelting system that can carry out udst separation to the flue gas produced in mine heat furnace smelting process comprehensively; Second technical problem to be solved by this invention be to provide a kind of can the method for comprehensive utilization of the mine heat furnace smelting flue-gas dust removal and purification recycled of the comparatively sufficient sensible heat to mine heat furnace smelting flue gas and latent heat and sensible heat and latent heat and system.
For solving above-mentioned first technical problem, mine heat furnace smelting flue-gas dust removal and purification processing method of the present invention includes following operation: 1) the flue-gas dust removal and purification process in baker stage: reclaim the flue gas of mineral hot furnace generation and be warming up to more than 280 DEG C, then pass into the first filtering high-temperature flue gas device and carry out dust removal by filtration purification, it is 8 ~ 10mg/Nm that the first filtering high-temperature flue gas device discharges dust content
3following gas, then this gas is discharged or further recycled; 2) the high-temperature gas duster Recovery Purifying process in normal smelting stage: reclaim coal gas of high temperature that mineral hot furnace produces and passed into the second filtering high-temperature flue gas device and carry out dust removal by filtration purification, it is 8 ~ 10mg/Nm that the second filtering high-temperature flue gas device discharges dust content
3following coal gas of high temperature, then carries out heat recovery to this coal gas of high temperature, then carries out emission treatment or pass into gas chamber storing; 3) matallurgical products goes out the flue-gas dust removal and purification process of heater stage: reclaim matallurgical products by flue gas suction facilities and come out of the stove to distribute the flue gas in mineral hot furnace outside and passed into above-mentioned first filtering high-temperature flue gas device in process and carry out dust removal by filtration purification, it is 8 ~ 10mg/Nm that the first filtering high-temperature flue gas device discharges dust content
3following gas, then this gas is discharged or further recycled; Wherein, the first described filtering high-temperature flue gas device and the second filtering high-temperature flue gas device are independently two complete equipments, and all have employed high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element.
Said method takes and first heats up to the flue gas in baker stage, and then the technological means of filtering is carried out by the first filtering high-temperature flue gas device, wherein, because flue-gas temperature is by more than temperature to 280 DEG C, be positioned on tar dew-point temperature, therefore, it is possible to effectively avoid the filter element in the first filtering high-temperature flue gas device (to adopt high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element, filter material withstand requirements when can meet high temperature filtration) polluted by greasy filth material attachments such as tar, thus efficiently solve the purified treatment problem of baker flue gas, said method first carries out udst separation by the second filtering high-temperature flue gas device to the coal gas of high temperature in normal smelting stage, again heat recovery is carried out to coal gas of high temperature, the filter element in the second filtering high-temperature flue gas device (the high temperature resistant sintering diamond bit filter element of same employing or high temperature resistant sintered ceramic porous material filter element can be prevented equally, filter material withstand requirements when can meet high temperature filtration) polluted by greasy filth material attachments such as the tar in coal gas, and can effective gas recovery heat energy, first filtering high-temperature flue gas device, both for the udst separation of baker flue gas, goes out again the udst separation of kiln gas for subsequent smelting product, realize effective utilization of equipment.Said method of the present invention comprehensively can carry out udst separation to the flue gas produced in mine heat furnace smelting process, can realize " zero-emission " of mine heat furnace smelting flue dust.
For implementing the mine heat furnace smelting system designed by above-mentioned mine heat furnace smelting flue-gas dust removal and purification processing method, comprise mineral hot furnace, matallurgical products is come out of the stove and is loaded transportation system, gas purification recovery system, described matallurgical products is come out of the stove and is loaded transportation system and comprise matallurgical products and to come out of the stove load wagon, described gas purification recovery system comprises coal gas dust removal purifier, gas purification recovery system blower fan, ignition bleeding device and gas chamber, the gas inlet to be clean of described coal gas dust removal purifier is connected with mineral hot furnace coal gas floss hole, the exhaust outlet of Purge gas of coal gas dust removal purifier is connected with gas purification recovery system fan induced draught mouth, gas purification recovery system blower fan exhaust outlet is connected with ignition bleeding device and gas chamber with valve respectively by pipeline, this mine heat furnace smelting system also comprises an additional flue-gas dust removal and purification treatment system, this additional flue-gas dust removal and purification treatment system comprises the first filtering high-temperature flue gas device and additional flue-gas dust removal and purification treatment system blower fan, the gas approach to be clean of described first filtering high-temperature flue gas device is connected respectively by pipeline and mineral heating furnace flue floss hole and the exhaust outlet that is positioned at the gas skirt that matallurgical products is come out of the stove above load wagon, the exhaust outlet of Purge gas of the first filtering high-temperature flue gas device is connected with additional flue-gas dust removal and purification treatment system fan induced draught mouth, smoke conveying duct between the gas approach to be clean of the first filtering high-temperature flue gas device and mineral heating furnace flue floss hole is connected with Smoke-heating device, described coal gas dust removal purifier then comprises the second filtering high-temperature flue gas device, and described second filtering high-temperature flue gas device and described first filtering high-temperature flue gas device all adopt high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element and the dust content in the gas after filtering can be controlled at 8 ~ 10mg/Nm
3below, the gas transmission pipeline wherein between the second filtering high-temperature flue gas device and gas purification recovery system blower fan is connected with gas waste-heat recycle device.
In technique scheme of the present invention, for heating up to baker flue gas, can the multiple heating modes such as electrical heating be adopted, selecting corresponding Smoke-heating device according to the difference of these mode of heatings.The better mode of one of the present invention's suggestion is: in described operation 1) in, first the thermal current that a combustion furnace produces is passed in the first filtering high-temperature flue gas device and carries out preheating, then the flue gas that mineral hot furnace produces is incorporated to this thermal current and is warming up to more than 280 DEG C and enter described first filtering high-temperature flue gas device and carry out dust removal by filtration purification to make flue gas; The fuel that described combustion furnace uses can come from described gas chamber or other fuels sources.First above-mentioned this mode of heating can carry out preheating by thermal current being passed into the first filtering high-temperature flue gas device to the first filtering high-temperature flue gas device, thus the filter element in the first filtering high-temperature flue gas device is heated to certain temperature, like this when baker flue gas and this filter element comes in contact, violent difference variation can not be there is on the contact surface and then cause the material condensation such as tar, thus better promote the service life of filter element; In addition, baker flue gas is incorporated to the heating mode of this thermal current, also there is the advantages such as programming rate is fast, heat loss is little.
Can take in technique scheme of the present invention with under type described operation 2) in coal gas of high temperature carry out heat recovery: first, coal gas of high temperature is passed into First Heat Exchanger, make itself and the low-temperature circulating water generation heat exchange from steam generator group, the coal gas that First Heat Exchanger is discharged is cooled to less than 230 DEG C; Then, discharged by First Heat Exchanger and the coal gas that enters gas chamber is derived and passed into gas fired-boiler and burns, the recirculated water through heating that First Heat Exchanger is discharged is passed into this gas fired-boiler makes its further heating being subject to gas-fired and forms superheated vapor simultaneously; Thereafter, superheated vapor is delivered to described steam generator group and drives generating.Thus, sensible heat and the latent heat of coal gas of high temperature can be made full use of.The electric energy that described steam generator group produces can be used for the operation of mineral hot furnace.
Also can take with under type described operation 2 in technique scheme of the present invention) in coal gas of high temperature carry out heat recovery: first, coal gas of high temperature is passed into First Heat Exchanger, make itself and the low-temperature circulating water generation heat exchange from steam generator group, the coal gas that First Heat Exchanger is discharged is cooled to less than 230 DEG C; Then, First Heat Exchanger is discharged and the coal gas that enters gas chamber is derived and passed into gas turbine and carries out burning and drive gas turbine power generation; Again the high-temperature tail gas that gas turbine produces derived and passed into gas turbine exhaust gas heat exchanger, the recirculated water through heating that First Heat Exchanger is discharged being passed into this gas turbine exhaust gas heat exchanger simultaneously and make its further heating being subject to this high-temperature tail gas and form superheated vapor; Thereafter, superheated vapor is delivered to described steam generator group and drives generating.Thus, sensible heat and the latent heat of coal gas of high temperature can more be made full use of.The electric energy that described gas turbine and/or steam generator group produce can be used for the operation of mineral hot furnace equally.
Also can take with under type operation 1 in technique scheme of the present invention) in first filtering high-temperature flue gas device discharge Purge gas carry out heat recovery: first, the Purge gas that first filtering high-temperature flue gas device is discharged is passed into the second heat exchanger, makes itself and the compressed air generation heat exchange from source of the gas; Then, preheating is carried out in being passed in the second filtering high-temperature flue gas device by the compressed air heated of being discharged by the second heat exchanger; Thereafter, the compressed air in compressed nitrogen or inert gas replacement second filtering high-temperature flue gas device is re-used.Which make use of the sensible heat of the first filtering high-temperature flue gas device institute emission gases and passes through to be carried out preheating by the compressed air heated in the second filtering high-temperature flue gas device, thus the filter element in the second filtering high-temperature flue gas device is heated to certain temperature, like this when coal gas of high temperature and this filter element comes in contact, violent difference variation can not be there is on the contact surface and then cause the materials such as the tar in coal gas to condense, thus better promote the service life of filter element; Use compressed air preheating, the mode of rear nitrogen or inert gas replacement, has saved the use amount of nitrogen or inert gas, has saved process operation cost.Security when passing into coal gas can be ensured with nitrogen or inert gas replacement.
Also can take with under type operation 1 in technique scheme of the present invention) in first filtering high-temperature flue gas device discharge Purge gas carry out heat recovery: first, the Purge gas that first filtering high-temperature flue gas device is discharged is passed into the second heat exchanger, make its with from the compressed nitrogen of source of the gas or inert gas generation heat exchange; Then, preheating is carried out in being passed in the second filtering high-temperature flue gas device by the compressed nitrogen that heats or inert gas of being discharged by the second heat exchanger.In like manner, which make use of the first filtering high-temperature flue gas device institute emission gases sensible heat and by being carried out preheating by the compressed nitrogen that heats or inert gas in the second filtering high-temperature flue gas device, thus the filter element in the second filtering high-temperature flue gas device is heated to certain temperature, like this when coal gas of high temperature and this filter element comes in contact, violent difference variation can not be there is on the contact surface and then cause the materials such as the tar in coal gas to condense, thus better promote the service life of filter element.
Also can further take with under type operation 3 in technique scheme of the present invention) in first filtering high-temperature flue gas device discharge Purge gas carry out heat recovery: first, the Purge gas that first filtering high-temperature flue gas device is discharged is passed into the second heat exchanger, make its with from the compressed nitrogen of source of the gas or inert gas generation heat exchange; Then, being passed in the second filtering high-temperature flue gas device as filter element recoil deashing gas by the compressed nitrogen that heats or inert gas of being discharged by the second heat exchanger carries out recoil deashing to filter element.Which make use of the first filtering high-temperature flue gas device institute emission gases sensible heat and by being carried out recoil deashing by the compressed nitrogen that heats or inert gas to the second filtering high-temperature flue gas device, the occurrence temperature rapid drawdown that prevents the second filtering high-temperature flue gas device inner because entering of recoil deashing gas and then cause the material condensation such as tar in coal gas, thus better promote the service life of filter element.
By above-mentioned to operation 1) and operation 3) in the first filtering high-temperature flue gas device Purge gas of discharging carry out the mode of heat recovery, make it and operate 2) in the operation of the second filtering high-temperature flue gas device organically combine, Purge gas by the first filtering high-temperature flue gas device discharge is carried out heat recovery and is associated with the operation of the second filtering high-temperature flue gas device, and then the preheating achieved the second filtering high-temperature flue gas device and thermal current blowback, ensure the service life of filter element in the second filtering high-temperature flue gas device.
For solving second technical problem to be solved by this invention, the method of comprehensive utilization of a kind of mine heat furnace smelting flue-gas dust removal and purification of the present invention and sensible heat and latent heat, its step comprises: 1) reclaim the mineral hot furnace normally coal gas of high temperature that produces of the stage of smelting passed into filtering high-temperature flue gas device and carry out dust removal by filtration purification, it is 8 ~ 10mg/Nm that filtrating equipment of flue gas discharges dust content
3following coal gas of high temperature; 2) coal gas of high temperature is passed into First Heat Exchanger, make itself and the low-temperature circulating water generation heat exchange from steam generator group, the coal gas that First Heat Exchanger is discharged is cooled to less than 230 DEG C; 3) described coal gas is passed into gas fired-boiler to burn, the recirculated water through heating that First Heat Exchanger is discharged is passed into this gas fired-boiler simultaneously and make its further heating being subject to gas-fired and form superheated vapor; 4) described superheated vapor is delivered to described steam generator group and drives generating; Described filtering high-temperature flue gas device adopts high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element.Thus, sensible heat and the latent heat of coal gas of high temperature can be made full use of.Wherein, the electric energy that described steam generator group produces can be used for the operation of mineral hot furnace.
For the mine heat furnace smelting flue-gas dust removal and purification of method of comprehensive utilization and the utilization system of sensible heat and latent heat of above-mentioned mine heat furnace smelting flue-gas dust removal and purification and sensible heat and latent heat, comprise mineral hot furnace, matallurgical products is come out of the stove and is loaded transportation system, gas purification recovery system, described matallurgical products is come out of the stove and is loaded transportation system and comprise matallurgical products and to come out of the stove load wagon, described gas purification recovery system comprises coal gas dust removal purifier, gas purification recovery system blower fan and gas chamber, the gas inlet to be clean of described coal gas dust removal purifier is connected with mineral hot furnace coal gas floss hole, the exhaust outlet of Purge gas of coal gas dust removal purifier is connected with gas purification recovery system fan induced draught mouth, gas purification recovery system blower fan exhaust outlet is connected with gas chamber with valve by pipeline, described coal gas dust removal purifier comprises a filtering high-temperature flue gas device, and described filtering high-temperature flue gas device adopts high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element and the dust content in the gas after filtering can be controlled at 8 ~ 10mg/Nm
3below, gas transmission pipeline between described filtering high-temperature flue gas device and gas purification recovery system blower fan is connected with First Heat Exchanger, described First Heat Exchanger is connected with steam generator group, described gas chamber is connected with gas fired-boiler, the coal gas of high temperature that described filtering high-temperature flue gas device is discharged passes into First Heat Exchanger and the low-temperature circulating water generation heat exchange from steam generator group, the coal gas that First Heat Exchanger is discharged is cooled to less than 230 DEG C and enters gas chamber, the coal gas of gas chamber is derived and is passed into gas fired-boiler and burns, the recirculated water through heating that First Heat Exchanger is discharged simultaneously passes into this gas fired-boiler to be made its further heating being subject to gas-fired and forms superheated vapor, this superheated vapor is delivered to described steam generator group and drives generating.
The method of comprehensive utilization of another kind of mine heat furnace smelting flue-gas dust removal and purification of the present invention and sensible heat and latent heat, its step comprises: 1) reclaim the mineral hot furnace normally coal gas of high temperature that produces of the stage of smelting passed into filtering high-temperature flue gas device and carry out dust removal by filtration purification, it is 8 ~ 10mg/Nm that filtrating equipment of flue gas discharges dust content
3following coal gas of high temperature; 2) coal gas of high temperature is passed into First Heat Exchanger, make itself and the low-temperature circulating water generation heat exchange from steam generator group, the coal gas that First Heat Exchanger is discharged is cooled to less than 230 DEG C; 3) described coal gas is passed into gas turbine to carry out burning and driving gas turbine power generation; 4) high-temperature tail gas that gas turbine produces is derived and is passed into gas turbine exhaust gas heat exchanger, and the recirculated water through heating that First Heat Exchanger is discharged pass into that this gas turbine exhaust gas heat exchanger makes it be subject to high-temperature tail gas add thermosetting superheated vapor further; 5) described superheated vapor is delivered to described steam generator group and drives generating; Described filtering high-temperature flue gas device adopts high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element.Thus, sensible heat and the latent heat of coal gas of high temperature can more be made full use of.Wherein, the electric energy that described gas turbine and/or steam generator group produce can be used for the operation of mineral hot furnace.
For the mine heat furnace smelting flue-gas dust removal and purification of method of comprehensive utilization and the utilization system of sensible heat and latent heat of above-mentioned another kind of mine heat furnace smelting flue-gas dust removal and purification and sensible heat and latent heat, comprise mineral hot furnace, matallurgical products is come out of the stove and is loaded transportation system, gas purification recovery system, described matallurgical products is come out of the stove and is loaded transportation system and comprise matallurgical products and to come out of the stove load wagon, described gas purification recovery system comprises coal gas dust removal purifier, gas purification recovery system blower fan and gas chamber, the gas inlet to be clean of described coal gas dust removal purifier is connected with mineral hot furnace coal gas floss hole, the exhaust outlet of Purge gas of coal gas dust removal purifier is connected with gas purification recovery system fan induced draught mouth, gas purification recovery system blower fan exhaust outlet is connected with gas chamber with valve by pipeline, described coal gas dust removal purifier comprises a filtering high-temperature flue gas device, and described filtering high-temperature flue gas device adopts high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element and the dust content in the gas after filtering can be controlled at 8 ~ 10mg/Nm
3below, gas transmission pipeline between described filtering high-temperature flue gas device and gas purification recovery system blower fan is connected with First Heat Exchanger, described First Heat Exchanger is connected with steam generator group, described gas chamber is connected with gas turbine, steam generator group be connected gas turbine exhaust gas heat exchanger between gas turbine, the coal gas of high temperature that described filtering high-temperature flue gas device is discharged passes into First Heat Exchanger and the low-temperature circulating water generation heat exchange from steam generator group, the coal gas that First Heat Exchanger is discharged is cooled to less than 230 DEG C and enters gas chamber, the coal gas of gas chamber is derived and is passed into gas turbine and carries out burning and driving gas turbine power generation, the high-temperature tail gas that gas turbine produces is derived and passes into gas turbine exhaust gas heat exchanger, the recirculated water through heating that First Heat Exchanger is discharged simultaneously passes into this gas turbine exhaust gas heat exchanger to be made its further heating being subject to this high-temperature tail gas and forms superheated vapor, this superheated vapor is delivered to described steam generator group and drives generating.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Fig. 1 is the formation schematic diagram of a kind of detailed description of the invention of mine heat furnace smelting system of the present invention.
Fig. 2 is a kind of obvious heat of smoke in above-mentioned mine heat furnace smelting system and latent heat comprehensive utilization process principle schematic.
Fig. 3 is another kind of obvious heat of smoke and latent heat comprehensive utilization process principle schematic in above-mentioned mine heat furnace smelting system.
Fig. 4 is another obvious heat of smoke and latent heat comprehensive utilization process principle schematic in above-mentioned mine heat furnace smelting system.
Detailed description of the invention
As shown in Figure 1, mine heat furnace smelting system comprises mineral hot furnace 110, matallurgical products is come out of the stove loads transportation system, gas purification recovery system, additional flue-gas dust removal and purification treatment system and combustion furnace 600, wherein, matallurgical products is come out of the stove and is loaded transportation system and comprise matallurgical products and to come out of the stove load wagon 120; Gas purification recovery system comprises coal gas dust removal purifier, gas purification recovery system blower fan 440, ignition bleeding device 450 and gas chamber 460, the gas inlet to be clean of described coal gas dust removal purifier is connected with mineral hot furnace 110 coal gas floss hole, the exhaust outlet of Purge gas of coal gas dust removal purifier is connected with gas purification recovery system blower fan 440 inlet scoop, and gas purification recovery system blower fan 440 exhaust outlet is connected with ignition bleeding device 450 and gas chamber 460 with valve respectively by pipeline; Additional flue-gas dust removal and purification treatment system comprises the first filtering high-temperature flue gas device 310 and additional flue-gas dust removal and purification treatment system blower fan 320, the gas approach to be clean of the first filtering high-temperature flue gas device 310 is connected respectively by pipeline and mineral hot furnace 110 fume emission mouth and the exhaust outlet that is positioned at the gas skirt 330 that matallurgical products is come out of the stove above load wagon 120, and the exhaust outlet of Purge gas of the first filtering high-temperature flue gas device 310 is connected with additional flue-gas dust removal and purification treatment system blower fan 320 inlet scoop; Above-mentioned coal gas dust removal purifier specifically comprises front latter linked gravitational precipitator 410 and the second filtering high-temperature flue gas device 420; Described second filtering high-temperature flue gas device 420 and described first filtering high-temperature flue gas device 310 all adopt high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element and the dust content in the gas after filtering can control at 5mg/Nm by its filtering accuracy
3below; Gas transmission pipeline between the second filtering high-temperature flue gas device 420 and gas purification recovery system blower fan 440 is connected with gas waste-heat recycle device 500; The air inlet of combustion furnace 600 is connected with gas chamber 460 by pipeline, and the thermal current floss hole of combustion furnace 600 is connected on the gas pipeline between the gas approach to be clean of the first filtering high-temperature flue gas device 310 and mineral hot furnace 110 fume emission mouth by pipeline.
Mine heat furnace smelting flue-gas dust removal and purification processing method based on above-mentioned mine heat furnace smelting system comprises following operation: 1) the flue-gas dust removal and purification process in baker stage: first start combustion furnace 600, the thermal current that produces of being burnt by combustion furnace 600 passes in the first filtering high-temperature flue gas device 310 and carries out preheating (fuel of combustion furnace 600 comes from described gas chamber 460, starting stage first can store a certain amount of coal gas in gas chamber 460), then the flue gas 210 that mineral hot furnace 110 produces (is mainly timber, the low-temperature flue gas of the high tar content that coke etc. produce between drying-out period) be incorporated to this thermal current and carry out dust removal by filtration purification to make flue gas at least be warming up to more than 280 DEG C and enter described first filtering high-temperature flue gas device 310, it is 5mg/Nm that first filtering high-temperature flue gas device discharges dust content
3following gas, then this gas is discharged or further recycled, 2) the high-temperature gas duster Recovery Purifying process in normal smelting stage: reclaim the coal gas of high temperature 220 of mineral hot furnace generation and passed into coal gas dust removal purifier, coal gas of high temperature is introduced into gravitational precipitator 410 and carries out rough dusting, and then enter the second filtering high-temperature flue gas device and carry out dust removal by filtration purification, it is 5mg/Nm that the second filtering high-temperature flue gas device discharges dust content
3following coal gas of high temperature, by gas waste-heat recycle device 500, heat recovery is carried out to this coal gas of high temperature again, then select to carry out emission treatment or pass into gas chamber 460 storing by crossing ignition bleeding device 450 according to gas composition, the dust that gravitational precipitator 410 and the second filtering high-temperature flue gas device are accepted enters ash can 430, 3) matallurgical products goes out the flue-gas dust removal and purification process of heater stage: reclaim matallurgical products by gas skirt 330 and come out of the stove to distribute the flue gas 230 (high-temperature flue gas) in mineral hot furnace outside and passed into above-mentioned first filtering high-temperature flue gas device in process and carry out dust removal by filtration purification, it is 5mg/Nm that the first filtering high-temperature flue gas device discharges dust content
3following gas, then discharge this gas or further recycle, now the dust accepted of the first filtering high-temperature flue gas device is for having valency dust, recoverable.
Embodiment 1
A mine heat furnace smelting system for smelting Al-Si alloy, adopts the System's composition shown in above-mentioned Fig. 1 and technological process.Wherein, the first filtering high-temperature flue gas device 310, second filtering high-temperature flue gas device 420 all adopts high temperature resistant cemented iron Al intermetallic porous material filter element, as shown in Figure 2, gas waste-heat recycle device 500 comprises the First Heat Exchanger 510 on the gas transmission pipeline that is connected between the second filtering high-temperature flue gas device 420 and gas purification recovery system blower fan 440, described First Heat Exchanger 510 is connected with steam generator group 530, gas chamber 460 is connected with gas fired-boiler 520, the coal gas of high temperature 220 that second filtering high-temperature flue gas device 420 is discharged passes into First Heat Exchanger 510 and the low-temperature circulating water generation heat exchange from steam generator group 530, the coal gas that First Heat Exchanger 510 is discharged is cooled to less than 230 DEG C and enters gas chamber 460, the coal gas of gas chamber 460 is derived and is passed into gas fired-boiler 520 and burns, the recirculated water through heating that First Heat Exchanger 510 is discharged simultaneously passes into this gas fired-boiler 520 to be made its further heating being subject to gas-fired and forms superheated vapor, this superheated vapor is delivered to described steam generator group 530 and drives generating.During above-mentioned mine heat furnace smelting system cloud gray model, in the baker stage, the flue gas that mineral hot furnace 110 produces enters described first filtering high-temperature flue gas device 310 with about 350 DEG C after being incorporated to the thermal current that combustion furnace 600 provides and carries out dust removal by filtration purification, and it is 4.2mg/Nm that the first filtering high-temperature flue gas device discharges dust content
3the gas of left and right, then heat recovery is carried out to this gas, finally discharge, normally smelting the stage, the coal gas of high temperature 220 that mineral hot furnace 110 produces is successively by after gravitational precipitator 410 and the second filtering high-temperature flue gas device 420, and dust content reduces to 4.5mg/Nm
3left and right, this coal gas of high temperature 220 enters First Heat Exchanger 510 with the temperature of about 475 DEG C, the gas outlet temperature of First Heat Exchanger 510 is about 200 DEG C, gas composition is (mark state percent by volume, dry state): CO:61.5%, CO2:23.5%, H2:2%, N2:7.5%, Mt:5%), then gas chamber 460 is passed into, the coal gas of gas chamber 460 is derived and is passed into gas fired-boiler 520 and burns, the recirculated water 710 through heating that First Heat Exchanger 510 is discharged simultaneously passes into this gas fired-boiler 520 to be made its further heating being subject to gas-fired and forms superheated vapor (the pressure 6.3MPa of superheated vapor, temperature 485 DEG C), this superheated vapor is delivered to described steam generator group 530 and drives generating, the electric current 720 that steam generator group 530 produces is delivered to mineral hot furnace 110 through switchyard 540, heater stage is gone out at matallurgical products, reclaim alusil alloy by gas skirt 330 to come out of the stove to distribute the flue gas 230 in mineral hot furnace 110 outside and passed into above-mentioned first filtering high-temperature flue gas device 310 in process and carry out dust removal by filtration purification, it is 4.5mg/Nm that the first filtering high-temperature flue gas device 310 discharges dust content
3following gas, then discharge after heat recovery is carried out to this gas.
Embodiment 2
As shown in Figure 3, on the basis of embodiment 2, gas waste-heat recycle device 500 changes into: gas chamber 460 is connected with gas turbine 550, gas turbine exhaust gas heat exchanger 560 is connected between steam generator group 530 with gas turbine 550, the coal gas of high temperature 220 that described second filtering high-temperature flue gas device 420 is discharged passes into First Heat Exchanger 510 and the low-temperature circulating water generation heat exchange from steam generator group 530, the coal gas that First Heat Exchanger 510 is discharged is cooled to less than 230 DEG C and enters gas chamber 460, the coal gas of gas chamber 460 is derived and is passed into gas turbine 550 and carries out burning and drive gas turbine 550 to generate electricity, the high-temperature tail gas that gas turbine 550 produces is derived and passes into gas turbine exhaust gas heat exchanger 560, the recirculated water 710 through heating that First Heat Exchanger 510 is discharged simultaneously passes into this gas turbine exhaust gas heat exchanger 560 to be made its further heating being subject to this high-temperature tail gas and forms superheated vapor, this superheated vapor is delivered to described steam generator group 530 and drives generating.During above-mentioned mine heat furnace smelting system cloud gray model, normally smelting the stage, the coal gas of high temperature 220 that mineral hot furnace 110 produces is successively by after gravitational precipitator 410 and the second filtering high-temperature flue gas device 420, First Heat Exchanger 510 is entered with the temperature of about 475 DEG C, the gas outlet temperature of First Heat Exchanger 510 is about 200 DEG C, then gas chamber 460 is passed into, the coal gas of gas chamber 460 is derived and is passed into gas turbine 550 and carries out burning and drive gas turbine 550 to generate electricity, the high-temperature tail gas that gas turbine 550 produces is derived and passes into gas turbine exhaust gas heat exchanger 560, the recirculated water 710 through heating that First Heat Exchanger 510 is discharged simultaneously passes into this gas turbine exhaust gas heat exchanger 560 to be made its further heating being subject to this high-temperature tail gas and forms superheated vapor, this superheated vapor is delivered to described steam generator group 530 and drives generating, the electric current 720 that steam generator group 530 produces and the electric current 720 that gas turbine 550 produces all are delivered to mineral hot furnace 110 by switchyard 540.
Embodiment 3
As shown in Figure 4, on the basis of embodiment 2, take to carry out heat recovery with under type to the Purge gas that the first filtering high-temperature flue gas device 310 is discharged in the baker stage of mineral hot furnace 110: the Purge gas (outlet temperature is about 320 DEG C) of being discharged by the first filtering high-temperature flue gas device 310 passes into the second heat exchanger 810, make itself and the compressed nitrogen generation heat exchange from source of the gas 421, preheating is carried out in being passed in the second filtering high-temperature flue gas device 420 by the compressed nitrogen 412a heated of then being discharged by the second heat exchanger 810; Go out heater stage at the matallurgical products of mineral hot furnace 110 to take to carry out heat recovery with the Purge gas of under type to the first filtering high-temperature flue gas device 310: the Purge gas (outlet temperature is about 320 DEG C) of being discharged by the first filtering high-temperature flue gas device 310 passes into the second heat exchanger 810, make it with from the compressed nitrogen 412a of source of the gas 421, heat exchange occur, that is then discharged by the second heat exchanger 810 is passed in the second filtering high-temperature flue gas device 420 by the compressed nitrogen that heats and carries out recoil deashing as the filter element deashing gas that recoils to filter element.On mineral hot furnace 110 work schedule, the baker stage is prior to the normal smelting stage of mineral hot furnace, the normal smelting stage that matallurgical products goes out heater stage and mineral hot furnace carries out simultaneously, therefore, the sensible heat that what aforesaid way can just be in good time utilize the baker stage, matallurgical products goes out the Purge gas that heater stage first filtering high-temperature flue gas device 310 is discharged realizes preheating to the second filtering high-temperature flue gas device 420 and blowback.
Claims (9)
1. mine heat furnace smelting flue-gas dust removal and purification processing method, it is characterized in that, comprise following operation: 1) the flue-gas dust removal and purification process in baker stage: reclaim the flue gas of mineral hot furnace generation and be warming up to more than 280 DEG C, then pass into the first filtering high-temperature flue gas device and carry out dust removal by filtration purification, it is 8 ~ 10mg/Nm that the first filtering high-temperature flue gas device discharges dust content
3following gas, then this gas is discharged or further recycled; 2) the high-temperature gas duster Recovery Purifying process in normal smelting stage: reclaim coal gas of high temperature that mineral hot furnace produces and passed into the second filtering high-temperature flue gas device and carry out dust removal by filtration purification, it is 8 ~ 10mg/Nm that the second filtering high-temperature flue gas device discharges dust content
3following coal gas of high temperature, then carries out heat recovery to this coal gas of high temperature, then carries out emission treatment or pass into gas chamber storing; 3) matallurgical products goes out the flue-gas dust removal and purification process of heater stage: reclaim matallurgical products by flue gas suction facilities and come out of the stove to distribute the flue gas in mineral hot furnace outside and passed into above-mentioned first filtering high-temperature flue gas device in process and carry out dust removal by filtration purification, it is 8 ~ 10mg/Nm that the first filtering high-temperature flue gas device discharges dust content
3following gas, then this gas is discharged or further recycled; Wherein, the first described filtering high-temperature flue gas device and the second filtering high-temperature flue gas device are independently two complete equipments, and all have employed high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element; In described operation 1) in, first the thermal current that a combustion furnace produces is passed in the first filtering high-temperature flue gas device and carries out preheating, then the flue gas that mineral hot furnace produces is incorporated to this thermal current and is warming up to more than 280 DEG C and enter described first filtering high-temperature flue gas device and carry out dust removal by filtration purification to make flue gas; The fuel that described combustion furnace uses comes from described gas chamber or other fuels sources.
2. mine heat furnace smelting flue-gas dust removal and purification processing method as claimed in claim 1, it is characterized in that: take with under type described operation 2) in coal gas of high temperature carry out heat recovery: first, coal gas of high temperature is passed into First Heat Exchanger, make itself and the low-temperature circulating water generation heat exchange from steam generator group, the coal gas that First Heat Exchanger is discharged is cooled to less than 230 DEG C; Then, discharged by First Heat Exchanger and the coal gas that enters gas chamber is derived and passed into gas fired-boiler and burns, the recirculated water through heating that First Heat Exchanger is discharged is passed into this gas fired-boiler makes its further heating being subject to gas-fired and forms superheated vapor simultaneously; Thereafter, superheated vapor is delivered to described steam generator group and drives generating.
3. mine heat furnace smelting flue-gas dust removal and purification processing method as claimed in claim 2, is characterized in that: the operation electric energy that described steam generator group produces being used for mineral hot furnace.
4. mine heat furnace smelting flue-gas dust removal and purification processing method as claimed in claim 1 or 2, it is characterized in that: take with under type described operation 2) in coal gas of high temperature carry out heat recovery: first, coal gas of high temperature is passed into First Heat Exchanger, make itself and the low-temperature circulating water generation heat exchange from steam generator group, the coal gas that First Heat Exchanger is discharged is cooled to less than 230 DEG C; Then, First Heat Exchanger is discharged and the coal gas that enters gas chamber is derived and passed into gas turbine and carries out burning and drive gas turbine power generation; Again the high-temperature tail gas that gas turbine produces derived and passed into gas turbine exhaust gas heat exchanger, the recirculated water through heating that First Heat Exchanger is discharged being passed into this gas turbine exhaust gas heat exchanger simultaneously and make its further heating being subject to this high-temperature tail gas and form superheated vapor; Thereafter, superheated vapor is delivered to described steam generator group and drives generating.
5. mine heat furnace smelting flue-gas dust removal and purification processing method as claimed in claim 4, is characterized in that: the operation electric energy that described gas turbine and/or steam generator group produce being used for mineral hot furnace.
6. mine heat furnace smelting flue-gas dust removal and purification processing method as claimed in claim 1 or 2, it is characterized in that: take with under type operation 1) in first filtering high-temperature flue gas device discharge Purge gas carry out heat recovery: first, the Purge gas that first filtering high-temperature flue gas device is discharged is passed into the second heat exchanger, makes itself and the compressed air generation heat exchange from source of the gas; Then, preheating is carried out in being passed in the second filtering high-temperature flue gas device by the compressed air heated of being discharged by the second heat exchanger; Thereafter, the compressed air in compressed nitrogen or inert gas replacement second filtering high-temperature flue gas device is re-used.
7. mine heat furnace smelting flue-gas dust removal and purification processing method as claimed in claim 1 or 2, it is characterized in that: take with under type operation 1) in first filtering high-temperature flue gas device discharge Purge gas carry out heat recovery: first, the Purge gas that first filtering high-temperature flue gas device is discharged is passed into the second heat exchanger, make its with from the compressed nitrogen of source of the gas or inert gas generation heat exchange; Then, preheating is carried out in being passed in the second filtering high-temperature flue gas device by the compressed nitrogen that heats or inert gas of being discharged by the second heat exchanger.
8. mine heat furnace smelting flue-gas dust removal and purification processing method as claimed in claim 1 or 2, it is characterized in that: take with under type operation 3) in first filtering high-temperature flue gas device discharge Purge gas carry out heat recovery: first, the Purge gas that first filtering high-temperature flue gas device is discharged is passed into the second heat exchanger, make its with from the compressed nitrogen of source of the gas or inert gas generation heat exchange; Then, being passed in the second filtering high-temperature flue gas device as filter element recoil deashing gas by the compressed nitrogen that heats or inert gas of being discharged by the second heat exchanger carries out recoil deashing to filter element.
9. for implementing the claims the mine heat furnace smelting system designed by the mine heat furnace smelting flue-gas dust removal and purification processing method described in 1, comprise mineral hot furnace (110), matallurgical products is come out of the stove and is loaded transportation system, gas purification recovery system, described matallurgical products is come out of the stove and is loaded transportation system and comprise matallurgical products and to come out of the stove load wagon (120), described gas purification recovery system comprises coal gas dust removal purifier, gas purification recovery system is with blower fan (440), ignition bleeding device (450) and gas chamber (460), the gas inlet to be clean of described coal gas dust removal purifier is connected with mineral hot furnace (110) coal gas floss hole, the exhaust outlet of Purge gas of coal gas dust removal purifier is connected with gas purification recovery system blower fan (440) inlet scoop, gas purification recovery system blower fan (440) exhaust outlet is connected with ignition bleeding device (450) and gas chamber (460) with valve respectively by pipeline, it is characterized in that: this mine heat furnace smelting system also comprises an additional flue-gas dust removal and purification treatment system, this additional flue-gas dust removal and purification treatment system comprises the first filtering high-temperature flue gas device (310) and additional flue-gas dust removal and purification treatment system blower fan (320), the gas approach to be clean of described first filtering high-temperature flue gas device (310) is respectively by pipeline and mineral hot furnace (110) fume emission mouth and be positioned at the come out of the stove exhaust outlet of gas skirt (330) of load wagon (120) top of matallurgical products and be connected, the exhaust outlet of Purge gas of the first filtering high-temperature flue gas device (310) is connected with additional flue-gas dust removal and purification treatment system blower fan (320) inlet scoop, smoke conveying duct between the gas approach to be clean of the first filtering high-temperature flue gas device (310) and mineral hot furnace (110) fume emission mouth is connected with Smoke-heating device, described coal gas dust removal purifier then comprises the second filtering high-temperature flue gas device (420), and described second filtering high-temperature flue gas device (420) and described first filtering high-temperature flue gas device (310) all adopt high temperature resistant sintering diamond bit filter element or high temperature resistant sintered ceramic porous material filter element and the dust content in the gas after filtering can be controlled at 8 ~ 10mg/Nm
3below, the gas transmission pipeline wherein between the second filtering high-temperature flue gas device (420) and gas purification recovery system blower fan (440) is connected with gas waste-heat recycle device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410375075.8A CN104154762B (en) | 2014-07-31 | 2014-07-31 | Mine heat furnace smelting flue-gas dust removal and purification processing method and mine heat furnace smelting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410375075.8A CN104154762B (en) | 2014-07-31 | 2014-07-31 | Mine heat furnace smelting flue-gas dust removal and purification processing method and mine heat furnace smelting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104154762A CN104154762A (en) | 2014-11-19 |
| CN104154762B true CN104154762B (en) | 2016-04-13 |
Family
ID=51880329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410375075.8A Active CN104154762B (en) | 2014-07-31 | 2014-07-31 | Mine heat furnace smelting flue-gas dust removal and purification processing method and mine heat furnace smelting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104154762B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107008912A (en) * | 2017-04-28 | 2017-08-04 | 江苏威拉里新材料科技有限公司 | A kind of gas purge system for smelting furnace |
| CN111013292A (en) * | 2020-01-11 | 2020-04-17 | 江西博鑫精陶环保科技有限公司 | Equipment for filtering high-temperature dust-containing flue gas by using heat-storage low-pressure regeneration wall-flow ceramic membrane |
| CN113340112B (en) * | 2021-06-04 | 2023-05-23 | 宁夏昆仑高科硅制品有限公司 | Energy-saving and environment-friendly comprehensive smelting system for silicon-manganese alloy |
| CN115371445A (en) * | 2022-06-14 | 2022-11-22 | 成都易态科技有限公司 | Yellow phosphorus flue gas purification system and industrial kiln flue gas purification device |
| CN116718025A (en) * | 2023-06-12 | 2023-09-08 | 青岛金能环科技有限责任公司 | Method for producing alloy by prereducing high-temperature coal gas of submerged arc furnace |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325748A (en) * | 1998-05-08 | 1999-11-26 | Daido Steel Co Ltd | Apparatus for treating exhaust gas from arc furnace |
| CN102445085A (en) * | 2010-10-08 | 2012-05-09 | 王全祥 | High-temperature flue gas and dust dry purification and waste heat recovery process for ore furnace |
| CN203043793U (en) * | 2013-02-04 | 2013-07-10 | 宿迁翔翔实业有限公司 | Dust-collecting purifying device for flue gas |
| CN103274368A (en) * | 2013-05-31 | 2013-09-04 | 成都易态科技有限公司 | Acid preparing process by metallurgical off-gas and special equipment line |
| CN103471403A (en) * | 2013-09-05 | 2013-12-25 | 山东金升有色集团有限公司 | Device for recycling waste heat and dust of metallic copper smelting flue gas |
| CN203615314U (en) * | 2013-12-16 | 2014-05-28 | 南京凯盛开能环保能源有限公司 | New energy-saving system of semi-hermetic submerged arc furnace |
-
2014
- 2014-07-31 CN CN201410375075.8A patent/CN104154762B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11325748A (en) * | 1998-05-08 | 1999-11-26 | Daido Steel Co Ltd | Apparatus for treating exhaust gas from arc furnace |
| CN102445085A (en) * | 2010-10-08 | 2012-05-09 | 王全祥 | High-temperature flue gas and dust dry purification and waste heat recovery process for ore furnace |
| CN203043793U (en) * | 2013-02-04 | 2013-07-10 | 宿迁翔翔实业有限公司 | Dust-collecting purifying device for flue gas |
| CN103274368A (en) * | 2013-05-31 | 2013-09-04 | 成都易态科技有限公司 | Acid preparing process by metallurgical off-gas and special equipment line |
| CN103471403A (en) * | 2013-09-05 | 2013-12-25 | 山东金升有色集团有限公司 | Device for recycling waste heat and dust of metallic copper smelting flue gas |
| CN203615314U (en) * | 2013-12-16 | 2014-05-28 | 南京凯盛开能环保能源有限公司 | New energy-saving system of semi-hermetic submerged arc furnace |
Non-Patent Citations (2)
| Title |
|---|
| 《YT膜分离技术在封闭式矿热炉高温煤气净化中的应用》;张祥剑等;《第四届全国膜分离技术在冶金工业中应用研讨会论文集》;20140630;第25-29页 * |
| 《高温除尘技术在电弧炉炼钢除尘中的应用》;刘贵琦;《环境工程》;20121231;第82-84页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104154762A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104154762B (en) | Mine heat furnace smelting flue-gas dust removal and purification processing method and mine heat furnace smelting system | |
| CN101539371B (en) | First flue gas dust removal and waste heat recovery system for electric stove | |
| CN104197725B (en) | The method of comprehensive utilization of mine heat furnace smelting flue-gas dust removal and purification and sensible heat and latent heat | |
| JP2012531480A (en) | Method and apparatus for keeping the coke oven chamber warm when the waste heat boiler is stopped | |
| CN203938658U (en) | The integrated system of a kind of biomass gas purifying and combustion tail gas residual heat recovery | |
| CN106755718B (en) | The fume waste heat utilization and dust removal integrated system and technique that pneumatic steelmaking generates | |
| CN103363811A (en) | Combustion method of high-temperature oxygen-mixed flue gas | |
| CN101825284B (en) | Municipal solid waste heat accumulating type gasification and melting incineration system | |
| CN104073297A (en) | Integrated system for purifying biomass fuel gas and recycling combustion tail gas waste heat | |
| CN102183155A (en) | Smoke high-temperature dust removal and steam and coal gas recovery system and method for calcium carbide furnace | |
| CN104061793A (en) | Step-by-step waste heat recovery system and method for electric furnace flue gas on whole temperature section | |
| CN106048118A (en) | Blast furnace coal gas recovery and utilization system | |
| CN201462862U (en) | Waste gas incinerator | |
| CN104421943A (en) | Environmental friendly disposing technology and system thereof for waste electric motor and other waste containing organic matters | |
| CN104083963A (en) | Deduster heating system and heating method | |
| CN101539370B (en) | First flue gas dust-removal and waste heat recovery system for electric stove without water cooling flue gas path | |
| WO2009072996A1 (en) | Plant and method for dry coke quenching | |
| CN103574594B (en) | Combustion heat supplying system taking living beings as fuel | |
| CN103961955B (en) | A kind of cleaner unit pre-heating technique for filtering flammable dusty gas | |
| CN107687639A (en) | Energy-saving waste combustion waste-heat recovery device | |
| CN111895424A (en) | Garbage disposal and generator set coupling power generation system | |
| CN204063013U (en) | A kind of CFBB with TRT | |
| CN111321263A (en) | Blast furnace raw gas heating method and device | |
| CN206073089U (en) | It is a kind of to relate to boiler thermodynamic system of the cigarette garbage as fuel | |
| CN204058259U (en) | A kind of take coal dust as the roasting assembly of fuel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |